lop 5 bo de thi violympic toan tieng anh tat ca cac vong co dap an 2

Question 5: Write 2.25 as a mixed number in the simplest form.. Exam number 2: Choose 2 consecutive cells which have the same or equal value.. Question 2: Write 47/100 as a decimal numbe

Đề thi Violympic Toán Tiếng Anh lớp 5 vòng 2 năm 2015 - 2016 Question 1: Find equal values (Tìm các cặp giá trị bằng nhau)

Question 2:

Question 2.1: Compare 7/9 2/3

Fill in the blank with the suitable sign (>, <, =)

Question 2.2: If 209/143 = (209 : n)/13 then n =

Question 2.3:

The correct number fill in the box is

Question 2.4: Complete the table (Write your answer in the simplest form) Rule: divide

by 4/5

Question 2.5: Write the equivalent fraction of 3/8 with a denominator of 1000.

Question 2.6: The perimeter of the square below is cm (Simplify your answer)

Question 2.7: The sum of two numbers is 156 and their ratio is 6/7 The smaller number

is

Question 2.8: Convert: 2 tons 40kg = kg

Question 2.9: The last digit of the product 11 x 22 x 33 x x 99 is

Question 2.10: The sum of two numbers is the greatest 4-digit number and their ratio is 1 :

2 The smaller number is

Question 3:

Question 3.1: Which of the following fractions is the greatest?

Question 3.2: kg

5

2

4 = g The missing number is

Question 3.3: If

4

3 2 : 2 1

3 m then m =

A 5/2 B 14/11 C 6(3/8) D 77/8

Question 3.4:

The value of

97

2 1

7

2 1 5

2 1 3

2

 x

M is

ĐÁP ÁN

Question 1: Find equal values

(2) = (10); (4) = (12); (5) = (1); (8) = (6); (9) = (16); (11) = (17); (13) = (7); (14) = (19); (15) = (18); (20) = (3

Question 2:

Question 2.1: >

Question 2.2: 11

Question 2.3: 125

Question 2.4: 2

Question 2.5: 375

Question 2.6: 6 Question 2.7: 72 Question 2.8: 2040 Question 2.9: 0 Question 2.10: 3333 Question 3:

Question 3.1: C

Question 3.2: D

Question 3.3: B

Question 3.4: D

Đề thi Violympic Toán Tiếng Anh lớp 5 vòng 3 năm 2015 - 2016 Question 1: Choose consecutively the cells with increasing value to remove them from the table.

Question 2:

Fill in the blank with the suitable sign (>, <, =)

Question 2.1: Compare: 5/123 1/41

Question 2.2: Divide

6

2 1 3

1

5   Write your answer in the simplest form

Question 2.3: 3km2= m2

Question 2.4: /4 m = 175cm The missing number is

Question 2.5: The cost of eight spoons is 4 dollars How much do 6 spoons cost?

Question 2.6: The sum of two consecutive odd numbers is 2016 The greater number

is

Question 2.7: The sum of denominator and numerator of a fraction is 91 and the fraction

is equal to 6/7 The denominator of the fraction is

Question 2.8: 1/2 + 1/4 + 1/n = 11/12 The value of n is

Question 2.9: Bella has 30 candies Alice has 5 candies fewer than Bella Sara has 5 candies more than Bella How many candies do they have altogether?

Question 2.10: The sum of the page number of the last 3 pages of a book is 369 What is the last page number?

Question 3:

Question 3.1: 25mm2=

a 1/40m2b 1/400m2c 1/4000cm2d 1/40000m2

Question 3.2: 3/100 m2=

a 3dm2b 30cm2c 3mm2d 3cm2

Question 3.3: 2kg =

a 20gb 200g c 2000gd 20000g

Question 3.4: Write >, <, =

3cm2200mm2 3200mm2

Question 3.5: 3/10 kg = g

Đáp án

Question 1: Choose consecutively the cells with increasing value to remove them from the table

(9) < (7) < (3) < (4) < (10) < (6) < (2) < (8) < (5) < (1)

Question 2:

Question 2.1: >

Question 2.2: 4

Question 2.3: 3000000

Question 2.4: 7

Question 2.5: 3

Question 2.6: 1009 Question 2.7: 49 Question 2.8: 7 Question 2.9: 92 Question 2.10: 124 Question 3:

Question 3.1: d

Question 3.2: a

Question 3.3: c

Question 3.4: <

Question 3.5: 300

Đề thi Violympic Toán Tiếng Anh lớp 5 vòng 4 năm 2015 - 2016 Exam number 1:

Question 1: In 12.36 which digit is in the ones place?

Question 2: Which of following decimal numbers should be replace the question mark?

Question 3: Write 12/100 as a decimal number

Question 4: What decimal number is shown?

Question 5: Write 2.25 as a mixed number in the simplest form

a

4

1

100

25

10

25 2 Question 6: Write the decimal number "six and three hundredth" using digits

Question 7: Convert 25g = kg Write your answer by decimal in the simplest

Question 8: Write numbers below in order from least to greatest: 3/12; 4/5; 0.75; 0.23

a 3/12; 0.23; 0.75; 4/5

b 0.23; 3/12; 0.75; 4/5

c 3/12; 4/5; 0.75; 0.23

d 0.23; 3/12; 4/5; 0.75

Question 9: If x is a natural number and x < 2876/100 then the greatest value of x is:

Question 10: Find x if ab4,938 < ab4,9x6 < ab4,953

Exam number 2: Choose 2 consecutive cells which have the same or equal value.

Exam number 3:

Question 1: Fill in the blank with the correct decimal number: 9/100 kg = kg Question 2: Write 47/100 as a decimal number in the simplest form

Question 3: In 348.256, which digit is in the tenths place?

Question 4: In 348.256, which digit is in the tens place?

Question 5: 4/10 + 6/1000 = Write your answer by decimal in the simplest form Question 6: I have two digits in the decimal part I am greater than 75 but less than 80 What least possible number am I?

Question 7: Find the value of p.

Question 8: Fill in the blank with the correct number 3/100 m = cm

Question 9: If p and q are consecutive natural numbers and 9.062 < p + q < 12.988 then p

x q =

Question 10: If n is a natural number and n < 12.03 < n + 5 the the smallest value of n

is

ĐÁP ÁN

Exam number 1:

Question 1: b

Question 2: c

Question 3: c

Question 4: c

Question 5: a

Question 6: d Question 7: a Question 8: b Question 9: b Question 10: b Exam number 2: Choose 2 consecutive cells which have the same or equal value

(1) = (5); (2) = (12); (3) = (11); (4) = (19); (6) = (16); (7) = (18); (8) = (20); (9) = (17); (10) = (15); (13) = (14)

Exam number 3:

Question 1: 0,09

Question 2: 0,47

Question 3: 2

Question 4: 4

Question 5: 0,406

Question 6: 75,01 Question 7: 0,6 Question 8: 3 Question 9: 25 Question 10: 8

Đề thi Violympic Toán Tiếng Anh lớp 5 vòng 5 năm 2015 - 2016 Exam number 1: Choose the increasing value (Chọn các giá trị theo thứ tự tăng dần)

Exam number 2:

Question 1: Convert 25m = km

Question 2: 2m2= dm2 The missing number is

Question 3: Convert 3,25kg = g

Question 4: Convert 340kg = ton

Question 5: Convert 5.03m = cm

Question 6: How many natural numbers are there less than 7,23?

Question 7: How many odd numbers are there less than 54,91?

a 55 b 27 c 26 d 28

Question 8: How many even numbers are there less than 46,25?

Exam number 3: Fill in the blank with the suitable number.

Question 1: Convert 1m = cm

Question 2: Convert 1mm = m

Question 3: If x is a natural number and 3,8 < x < 4,3 then x =

Question 4: In the following numbers, which is the greatest?

7,568; 9,265; 8,975; 7,689; 9,256

Question 5: In the following numbers, which is the smallest?

4,92; 5,84; 4,85; 8,54; 4,58; 5,48

Question 6: Convert: 5km 2m = km

Question 7: If m is a even number and 81,32 > m > 78,54 then m =

Question 8: Use all the digits below to form the decimal number that is smaller than 5 2; 5; 9; 4; 8 How many such numbers are there?

Question 9: Fill in the blank with the suitable sign (>, <, =)

Compare: 76,5 75,66

Question 10: Compare: 31,040 31,04

Đáp án

Exam number 1: Choose the increasing value (Chọn các giá trị theo thứ tự tăng dần) 0,01 < 0,03 < 0,04 < 0,05 < 0,06 < 0,08 < 0,09 < 0,12 < 0,21 < 0,23 < 0,32 < 0,34 < 0,43

< 0,54 < 0,56 < 0,65 < 0,67 < 0,87 < 0,89 < 0,98

Exam number 2:

Question 1: b

Question 2: a

Question 3: c

Question 4: c

Question 5: c Question 6: a Question 7: b Question 8: c Exam number 3: Fill in the blank with the suitable number

Question 1: 100

Question 2: 0,001

Question 3: 4

Question 4: 9,265

Question 5: 4,58

Question 6: 5,002 Question 7: 80 Question 8: 120 Question 9: >

Question 10: =

Đề thi Violympic Toán Tiếng Anh lớp 5 vòng 6 năm 2015 - 2016 Exam number 1: Choose 2 consecutive cells which have the same or equal value (Tìm cặp bằng nhau)

Exam number 2: Vượt chướng ngại vật

Question 2.1:

The missing number is

Question 2.2: Find the value of y such that 19.5 + y = 32.6

Question 2.3: Count back by 0.5

The value of P is

Question 2.4:

The value of Q is

Question 2.5: Calculate: 1.34 + 2.34 + 3.34 + + 20.34 =

a 205.96 b 195.12 c 227.64 d 216.8

Question 2.6:

Rule: Add 13.85 The missing number is

Question 2.7:

Rule: Substract 15.24 The missing number is

Question 2.8: Which of following decimals is equal to 3/8?

Question 2.9: Write these numbers in standard form: 21.3 = 20 + 1 + 0.3

Which of following is true?

a 149.34 = 100 + 40 + 9 + 0.34

b 127.06 = 120 + 7 + 0.06

c 105.9 = 100 + 5 + 0.9

d 280.2 = 200 + 8 + 0.2

Question 2.10: Count on by 0.3

N 4.7 The value of N is

Question 2.11: 10 + + 8 = 18.06

The missing number is

Question 2.12: Find the value of a if

Exam number 3: Fill in the blank with the suitable number (Note: write decimal number with "the dot" between number part and fraction part Example: 0.5)

Question 3.1: If n = 23.54 then n x 9 =

Write your answer by decimal in the simplest form

Question 3.2: If a x b = 42.63 then b x a =

Question 3.3:

The missing decimal number is

Question 3.4: Multiply: 3.56 x 8 = Write your answer by decimal in the simplest form

Question 3.5: This table shows the weights of Peter's three dogs.

The product of the combined weight of Shadow and Josie and the weight of Brody

is kg

Question 3.6: If a = 2.4; b = 5.6 and c = 7.6 then (a + b) x c = Write your answer by decimal in the simplest form

Question 3.7: The cost of 2 kilograms of oranges is 2.31 dollars What is the cost of 12 kilograms of oranges?

Question 3.8: Calculate: 0.4 x 8.4 x 2.5 =

Fill in the blank with the suitable sign (>, =, <)

Question 3.9: Compare: M = 25.36 x 25.34 and P = 25.35 x 25.35

Question 3.10: Compare: A = 26.26 x 4949.49 and B = 49.49 x 2626.26

ĐÁP ÁN

Exam number 1: Choose 2 consecutive cells which have the same or equal value (Tìm cặp bằng nhau)

(1) = (5); (2) = (4); (3) = (19); (6) = (10); (7) = (8); (9) = (20); (11) = (12); (13) = (15); (14) = (18); (16) = (17)

Exam number 2: Vượt chướng ngại vật

Question 2.1: b

Question 2.2: d

Question 2.3: b

Question 2.4: b Question 2.5: d Question 2.6: b

Question 2.7: a

Question 2.8: b

Question 2.9: c

Question 2.10: c Question 2.11: a Question 2.12: c Exam number 3: Fill in the blank with the suitable number

Question 3.1: 211.86

Question 3.2: 42.63

Question 3.3: 9.2

Question 3.4: 28.48

Question 3.5: 44.7

Question 3.6: 60.8

Question 3.7: 13.86

Question 3.8: 8.4

Question 3.9: <

Question 3.10: =